Description of problem:
For desktop wallpaper for new user is used /usr/share/mdk/backgrounds/default.jpg image, but should be usable /usr/share/mdk/backgrounds/rosa-background.jpg.
Because /usr/share/mdk/backgrounds/default.jpg do not included in any package, I suppose that this picture is copied in the process of installation process and should be changed there.

Well, I spoke about my home system, that is updated from ROSA Desktop 2011. And there default.jpg it is no link, but file. I tested on the new .iso-image (248) and found that all is OK. Thus, I've hastened with this bug.